Air and gas mixer for explosive-engines.



L, FDGLER. AIR AND G AST MIXER FOR EXPLOSIVE ENGINES.

APPLICATION FILED FEB. 20, 1909.

Patented 12,191U.-

I I :h I l l I WITNESSES v UNITED STATES PATENT onnron: assua e L. FOGLER, or'nAL'ii-Monn, MARYLAND, AssIeNoR ro HARRY B. linear, or

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954,507. i i fic q a t Patented Apr. 12, 1910. Application filed February 20, 1909. $eria1 No. 479,179. I

through which the air entering through v To allieho m it may concern: p r I Be it known that I, GEORGE L. FOGLER, a must pass and whereby it is broken up into;

resident of Baltimore, in the State ofMarysmall streams. The mixing chamber l2fis.

land, have invented anew'and useful Im-' connected by pipe 17 to a. manifold ltlto 5 provement'in Air and Gas Mixersfor Exwhich may be connected one or more' cylin- 6.0 plosive-Engin'es, of which the following is a ders 19 oi a'nexplosive. engine. The -ilrawspecification. I ing shows two such cylinders and shows they '1 This invention relates to air and .gas mixendsofthe manifold broken off to indicate ers for explosive engines. that any number of cylinders may be sup- The object of the invention is to provide plied therefrom. The mixing chambers and a device of this kind whereby either a very nozzles may be of any desired shape in 'crosslean or'a rich mixturevcan be produced.- section, the chambers being shown circular The -essential feature of the invention coir while the nozzle 10 is shown oval -or oblong? sists in providing a preliminary mixing Both the chamber% and nozzles are prefer- 1 chamber in which the gas is mixed with air ably tapered from their inlet to their outletand reduced to atmospheric pi essure, 'toends as shown. The preliminary mixing 'gether with' a second mixing chamber into chamber (imay be omitted in some cases.

- I ivhich the mixture from the first chamber is r In the use of the mixer the gas comes drawn by the suction of the engine and either from the supply main or vaporizer '20 wherein it is-mixed with a further supply through supply pipe 1. IE enters chamber of air entering said chamber at the same 6 through the nozzle 4, and if it'com'es from velocity and pressure as the gas mixture. a gas main it enters at considerable velocity, V In-lthe accompanyingdrawings Figure 1 due to its pressure, and draws in through is a sectional view through my improved the opening 7 a quantity of air which is 25fmixer showing the application thereof to a mixed with the gas in chamber 6 and the so pair of cylinders of an explosive engine, and mixture therein reduced practically to at- Figs. 2' and 3 are cross-sections taken remospheric pressure. If supply pipe 1 Spectively on lines 2 2 and 33 of Fig. 1. comes from an oil vaporizer the gas has The gas sup. .ly pipe is shown at 1. This practically no pressure; and is drawn into 3h mayrbe connec'fiad to a gas main or any other chamber ;6 by the suction of the en ine. 85.

suitable source of artificial ornatural gas or This mixture is drawn through the nozzle to a'vaporizer wherein gasolene or other oil 10 into chamber 12 by the suction of the a is converted into gas. This supply pipe is -engine cylinders, and this suction alsodraws provided with suitable regulating and cutin a further quantity of air through the- 35. of? valve 2. This pipe communicates with openings 13 in casing .11. The air enters al nozzle 4. projecting through the end of a chamber 12 through the perforated plate 15 casing 5 inclosing. the preliminary mixing and is mixed with mixture coming from chamber 6. The end of the casing 5 around the preliminary hnixing chamber. The

' nozzle 4,; is provided with'dpenings 1' for the quantity bf air coming through openings 13 40 admissionof air, whijch openings, an be adis regula ed by the valve 14 to admit the j usted by a suitable valve '8. T e gas enright quantity oft-air proportionate to the tering through nozzle Gdraws in through suction of'the engine. The air regulating the openings 7 a proper amount of air which valve 14 and the gas supply valve 2 are is mixed with the gas the chamber (5. preferably connected tob'e operated in uni- 4:) In this chamber the mixtureis'reduced to son so that when the gas is cutpil; more atmospheric pressure,or practically so. The or less the air is proportionately reduced.

opposite end of the chambertiis' connected Various forms of mechanical connections to nozzle 10 projecting through the end of between these valves to accomplish their casing 11 inclosing the second mixing chamsimultaneous movement'will readily suggest 50 her 12. The casing 11 near its base is pro- 'themselves.* The drawing shows diagr'am vided with air openings 13 which-are conmat-ically suitable mechanism indicated trolled by a valve 14. Between thenozzle generallyat 20 for this plurpose, and com- 1O and chamber walls 11 in advance of the prising a leversecured to the valve 2 and air openings" 13 is a plate 15 provided with having a pin entering a slot in an arm on a 55 large number of small perforations vertical rock shaft,-wl1ich at its upper end he nozzle, and a perforated plate i tween the carries another arm having a slot and pin connection with a p ojection on air valve 14.

It is well known in the operation of explosive engines the leaner the mixture the better is the explosion providing the proper compression is secured. By providing for a double mixing of air with the gas, that is, a preliminary mixing in chamber 6 and a second mixing in chamber 12, I provide for a very lean mixture, one'much leaner than could be obtained by a single mixing which depends upon drawing in air by the velocity of the gas, as with prior devices. I utilize the suction of the engine to provide the second supply of air, when gas is used, and to provide both the first and second supply of air when oil or" gasolene is used. In the latter case more air must be taken in at the openings 13 than in case where gas is used. The mixture can be made of any desired richness by properly regulating the valve lat.

hat I claim 1s:

1 A d e 1 f l i. n air an as mixei 01 exp osiye engines compris ng a preliminary mixing chamber provided with a gas inlet and air openings around the same, a second mixing chamber having means at its top for connection to the inlet of an explosive engine cylinder and having projecting through its base a tapered nozzle communicating with thepreliminary mixing chamber and being provided with air openings ar und said nozzle and walls of said mixing chamber and in advance of the. air openings.

2. An air and gas mixer for explosive engines comprising a preliminary mixing chamber provided with gas inlet nozzle and air openings around the same, a second tapering mixing chamber, a tapering nozzle connected to the first chamber and projecting into the second chamber, a perforated plate between said second nozzle and the chamber walls, an aircpening being provlded into the base of sald chamber below said perforated plate, and a valve controlling said air opening.

3. An air and gas mixer for explosive engines comprising a preliminary mixing chamber provided with a gas inlet and air openings around the same, a second mixing chamber having means at its top for connection to the inlet of an explosive engine cylinder and having projecting through its base a nozzle communicating with the preliminary mixing chamber and being provided with air openings around said nozzle,

and a perforated plate between the nozzle and chamber walls and in advance of the air openings, and a connection from the second mixing chamber to the inlet of a gas engine, whereby the suction of the engine draws air and gas into the mixer.

4. An air and gas mixer for explosive engines, comprising a mixing chamber arranged for connection to the inlet of an explosive engine cylinder, a tapering nozzle projecting into said mixing chamber and arranged for connection to a supply of gaseous fuel and a perforated plate between said inlet and the chamber walls, said chamber being provided with air openings below said perforated plate.

5. An air and gas mixer for explosive engines, comprising a mixing chamber arranged for connection to the inlet of an explosive engine cylinder, a nozzle projecting through the base of'said mixing chamber and arranged for connection to a supply of gaseous fuel, said mixing chamlm" being provided with air openings around said fuel supply connection, and a perforated plate between the nozzle. and chamber walls and in advance of the air openings.

6. An air and gas mixer for explosive en gines, comprising a tapering mixing cham ber arranged for connection to the inlet of an explosive engine cylinder, a tapering nozzle arranged for connection to a supply of gaseous fuel and projecting into said chamber, a perforated plate between said tapering nozzle and the chamber walls, an air opening being provided into the base of said chamber below said perforated plate, and a valve controlling said air opening.

7. In'explosive engines, the combination with a cylinder and a supply connection thereto for gaseous fuel, of an air and gas mixer in said connection and comprising a tapering mixing chamber having its smaller end connected to the engine cylinder and provided with air openings in its other end, a nozzle connected to the fuel supply and projecting into the other end of the mixing chamber beyond the air openings, and a perforated plate between said nozzle and the chamber wallsin advance of the air openings.

In testimony whereof, I have hereunto set my hand.

GEORGE L. FOGLER.

Witnesses JOHN S. Corr,

F. llmrnu. 

